Target installation apparatus and target installation method using the same

A target installation apparatus for installing a target for aiming equipment mounted on a vehicle comprises: a reference point setting unit configured to set vehicle-side reference points on both exterior sides in a vehicle width direction of the vehicle, wherein the reference point setting unit includes: a rod-shaped member that extends in the vehicle width direction with respect to the vehicle and that is arrangeable to abut both tires of the vehicle; and a pair of reference point forming units that are attached to the rod-shaped member to be positioned on both the exterior sides of the vehicle in the case of being arranged with respect to the vehicle and that include marks formed to respectively indicate the reference points, and wherein the pair of reference point forming units respectively include moving portions that move the reference points in a front-and-rear direction of the vehicle.